编程经验分享

int size = (int)TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_SP, 20, context.getResources().getDisplayMetrics());

@Override
	public void onCreate()
	{
		super.onCreate();
		handler=new Handler(Looper.getMainLooper());
		handler.post(new Runnable(){
			public void run(){
				Toast.makeText(getApplicationContext(), "Service is created!", Toast.LENGTH_LONG).show();
			}
		});
	}
	@Override
	public void onStart(Intent intent,int startId)
	{
		super.onStart(intent, startId);
		handler=new Handler(Looper.getMainLooper());
		handler.post(new Runnable(){
			public void run(){
				Toast.makeText(getApplicationContext(), "Service is on!", Toast.LENGTH_LONG).show();
			}
		});
	}
	@Override
	public void onDestroy(){
		super.onDestroy();
		handler=new Handler(Looper.getMainLooper());
		handler.post(new Runnable(){
			public void run(){
				Toast.makeText(getApplicationContext(), "Service is off!", Toast.LENGTH_LONG).show();
			}
		});